20458472863 has 16 divisors (see below), whose sum is σ = 21668572800. Its totient is φ = 19289491200.

The previous prime is 20458472807. The next prime is 20458472873. The reversal of 20458472863 is 36827485402.

It is not a de Polignac number, because 20458472863 - 2¹⁷ = 20458341791 is a prime.

It is a super-2 number, since 2×20458472863² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20458472873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180778 + ... + 271288.

It is an arithmetic number, because the mean of its divisors is an integer number (1354285800).

Almost surely, 2^20458472863 is an apocalyptic number.

20458472863 is a deficient number, since it is larger than the sum of its proper divisors (1210099937).

20458472863 is a wasteful number, since it uses less digits than its factorization.

20458472863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90738.

The product of its (nonzero) digits is 2580480, while the sum is 49.

The spelling of 20458472863 in words is "twenty billion, four hundred fifty-eight million, four hundred seventy-two thousand, eight hundred sixty-three".